VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/VBoxTAP/constants.h@ 400

Last change on this file since 400 was 1, checked in by vboxsync, 55 years ago

import

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  • Property svn:keywords set to Author Date Id Revision
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1/*
2 * TAP-Win32 -- A kernel driver to provide virtual tap device functionality
3 * on Windows. Originally derived from the CIPE-Win32
4 * project by Damion K. Wilson, with extensive modifications by
5 * James Yonan.
6 *
7 * All source code which derives from the CIPE-Win32 project is
8 * Copyright (C) Damion K. Wilson, 2003, and is released under the
9 * GPL version 2 (see below).
10 *
11 * All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
12 * and is released under the GPL version 2 (see below).
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2
16 * as published by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program (see the file COPYING included with this
25 * distribution); if not, write to the Free Software Foundation, Inc.,
26 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 */
28
29//====================================================================
30// Product and Version public settings
31//====================================================================
32
33#define PRODUCT_STRING "VirtualBox TAP Adapter"
34
35#define TAP_NDIS_MAJOR_VERSION 5
36#define TAP_NDIS_MINOR_VERSION 0
37
38//===========================================================
39// Driver constants
40//===========================================================
41
42#define ETHERNET_HEADER_SIZE (sizeof (ETH_HEADER))
43#define ETHERNET_MTU 1500
44#define ETHERNET_PACKET_SIZE (ETHERNET_MTU + ETHERNET_HEADER_SIZE)
45#define DEFAULT_PACKET_LOOKAHEAD (ETHERNET_PACKET_SIZE)
46
47#define NIC_MAX_MCAST_LIST 32 // Max length of multicast address list
48
49#define MINIMUM_MTU 576 // USE TCP Minimum MTU
50#define MAXIMUM_MTU 65536 // IP maximum MTU
51
52#define PACKET_QUEUE_SIZE 64 // tap -> userspace queue size
53#define IRP_QUEUE_SIZE 16 // max number of simultaneous i/o operations from userspace
54
55#define TAP_LITTLE_ENDIAN // affects ntohs, htonl, etc. functions
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